A nurse is admitting a client who has active tuberculosis to a room on a medical-surgical unit. Which of the following room assignments should the nurse make for the client?

Identifying appropriate placement for infectious clients requires understanding transmission-based precautions. Tuberculosis is an airborne pathogen requiring specialized ventilation to prevent the spread of droplet nuclei. Knowledge of negative pressure systems and environmental safety standards is essential for preventing nosocomial transmission to others. Choice A rationale Placing a client with active tuberculosis in a semi-private room violates airborne precautions. This increases the risk of horizontal transmission to immunocompromised roommates via microscopic droplet nuclei that remain suspended in the air for several hours. Choice B rationale Airborne infection isolation rooms require a minimum of 6 to 12 air exchanges per hour. Exhausting air directly outdoors or through HEPA filters prevents contaminated air from recirculating into common hallways or other patient care areas. Choice C rationale Admission to an intensive care unit is reserved for hemodynamically unstable clients or those requiring advanced mechanical ventilation. Tuberculosis alone is not an indication for critical care unless the client exhibits acute respiratory failure or septic shock. Choice D rationale While proximity to the nurses' station allows for frequent observation, it does not address the physiological requirement for negative pressure ventilation. Standard medical-surgical rooms lack the engineering controls necessary to contain airborne bacilli within the specific room.